mport java.util.*;
public class GetRandomNumber {
	   public static int [] getRandomNumber(int max,int amount) {
		         //1-max之间的amount个不同随机整数
			      int [] randomNumber = new int[amount];
			           int index =0;
			                randomNumber[0]= -1;
			                     Random random = new Random();
			                          while(index<amount){
			                                 int number = random.nextInt(max)+1;
			                                        boolean isInArrays=false;
			                                               for(int m:randomNumber){//m依次取数组randomNumber元素的值（见3.7）
			                                                         if(m == number)
			                                                                    isInArrays=true;  //number在数组里了
			                                                                            }
			                                                                                   if(isInArrays==false){
			                                                                                              //如果number不在数组randomNumber中:
			                                                                                                         randomNumber[index] = number;
			                                                                                                                    index++;   
			                                                                                                                           }
			                                                                                                                                }
			                                                                                                                                     return  randomNumber;
			                                                                                                                                        }
			                                                                                                                                       }
